iStumbler
iStumbler
103.43

4.3

iStumbler free download for Mac

iStumbler

05 December 2018

Find local wireless networks.

Overview

iStumbler is a wireless discovery tool for Mac OS X, providing plugins for finding Wi-Fi networks, Bluetooth devices, Bonjour services, location information, and now 2.4 and 5 GHz spectrum analysis with your Mac.

iStumbler is one price for all the computers that you own. Download iStumbler and try it out for free, then purchase a license within the app via PayPal or Coinbase. Previous donors and subscribers are entitled to a free license: see the store page for details.

What's new in iStumbler

Version 103.43:
Added:
  • Live Map view to Location Plugin
  • Bluetooth LE Support to the Bluetooth Plugin
  • Real-Wave Spectrum view to WiPry Plugin
  • TouchBar support for opening or switching between plugins
Bug fixed:
  • Many many assorted bug fixes and enchancements
  • Better behaved when War Driving in the Mojave
  • Into the Dark Mode, Built for Mojave
  • Fixes a potential crash when Location Services are disabled
iStumbler for Mac Old Versions

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How would you rate iStumbler app?

64 Reviews of iStumbler

2
Eric•Woehler
28 June 2014
Version: 100

Most helpful

No longer free - dev's web page states clearly it is now $20 for all the computers you own. Seriously? $20? I would have considered paying $2 for this useful utility, but $20 is way too much. It's a good app but plenty of good alternatives out there - check out wifi explorer (my reccommendation); other apps besides these. Radar
(16)
5
Plotzenhots
07 November 2019
Version: 103.43
..tried some Stumbler apps along the jears.. iStumbler is undoubtedly one of the Best. The fifth Star is personal to Alf Watt.
(1)
wickedsp1d3r
18 October 2017
Version: 102.2
Pretty unstable app. I would NOT buy it after 3-day usage experience. I am pretty sure there are better (and free) alternatives.
(4)
3.5
Uncoy
11 February 2016
Version: 101.5
iStumbler pricing is too aggressive, leaving iStumbler naked to be copied and raped commercially by bottom feeders like Koingo Soft (AirRadar). I bought a license in solidarity (iStumbler is great software) but as most of my machines are on Snow Leopard, I'm still mainly using the free version and didn't have to. Zero to $25 is obnoxious. If being obnoxious was your goal, you've succeeded. In the long term, encouraging competition is not good business practice. My new lower review is based on the $25 price tag. The software still works fine. I hope the developer finds a better compromise between thinking about his users and thinking about himself. $20 was still okay for a simple but nifty utility which works on all your computers.
(6)
Show comment (1)
Felix01
16 January 2016
Version: 101.5
Alright folks, help me out here. If all I’m really wanting is something to help deconflict from other Wi-Fi networks in the area, wouldn’t Apple’s included Wireless Diagnostics tool work just fine? And save me 25 bucks to boot now that the iStumbler developer has decided to start charging to put a pretty wrapper on something Apple already provides for free? Before I get flamed, of course I know iStumbler does other things but I’m just interested in identifying the local Wi-Fi networks and their channels. Do a spotlight search on “Wireless Diagnostics” and open it up. Click on “Scan Now” in the lower right and voila, Apple’s cool little app finds all the 2.4 and 5GHz networks within range and the first column on the left makes suggestions on the 2.4 GHz and 5 GHz channels which are least used (Best choices if you don’t want to let Apple automatically select an appropriate channel). Plus if you pull down the Wireless Diagnostics “Window” menu, there’s other cool things in the app’s toolbox like a sniffer function.
(2)
5
jooosh
11 November 2015
Version: 101.5
I appreciate the new visual tweaks and the other updates from v99. Keep up the great work!
(0)
jooosh
11 November 2015
Version: 101.5
Thanks Alf for the great software. I've been using this for many years to help diagnose WiFi issues and it's always been solid. Thrilled to pay $25 for this update that has saved me many more hours and $$$ in the past. Keep up the great work and don't let the haters get to you!!
(0)
1.5
suds
15 October 2015
Version: 101.5
Meh. Last time I tried any of these programs they only worked with the built in Mac adapters. If you are not afraid of the terminal, you can do a little grep foo, or better yet install aircrack-ng suite, and get more data.
(0)
Show comments (2)
3
Noivad
26 July 2015
Version: 101.4
When the app was free, I would use that since it was the best free app out there. When the dev started charging, I considered it but found others that cost less and did just as many things as I needed. Is the app good? Yes. But is the App worth the current price when there are others out there with the same capabilities or more for less? No. At $10–$15 I would have stuck with it, but not at the current price. I think the dev should have looked at what competitors where charging for equivalent features and priced accordingly to retain customers. And just to be clear: I do believe in supporting good apps by paying for them, even if they are donation-ware. I buy shareware regularly, and recommend apps that I see as worth the price. In this case, it’s not worth the current price, and is an otherwise average app in an already crowded field.
(5)
Show comment (1)
3
Xenophile
22 November 2014
Version: 100.123
I highly recommend NetSpot or WiFi Explorer. iStumbler is nice but not worth $20. Note to developer: when you raise the price, try adding significant new functionality so there is an obvious reason for the price increase. Your utility is now among the most expensive of its kind. so it should provide the most features of its kind.
(5)
Show comments (3)
4
B-Jefferson-Le-Blanc
06 November 2014
Version: 100.123
The feedback on this page should serve as a warning to any developer who wants to start charging for an app they previously offered for free. Many people are ungrateful and think, though they get paid for their work, you have no right to do the same. One may quibble over the price, but the principle remains. I've seen complaints when an app went from free to just $5. You may think you can do without such people as customers, but they will frag you on websites like this one anyway. They seem to miss the irony that they are being every bit as mean spirited as they accuse you of being. It's a clear case of transference. They think they'll look better by ragging on you. They're wrong. If an app worked well enough to get a four star rating when it was free, it's utility doesn't drop significantly if it now costs a little or a lot. Cheap and expensive are subjective values at best, having nothing to do with how well an app works. Thus, without even trying it, I'll give it four stars based on the majority of reviewers who like it.
(7)
Show comments (4)
0.5
Jazzyguy
21 September 2014
Version: 100.121
The worst!!!! The money squeezing Developer wants $20 to strengthen his coffers. Don't give to him. Get NetSpot which is free (as in Beer) and enjoy a great application.If you have an old edition of iStumbler it is still good,unfortunately for him he can't take it away from us. It is available for SnowLeopard and Leopard but if you don't have it just use NetSpot.
(2)
Show comment (1)
2
Eric•Woehler
28 June 2014
Version: 100
No longer free - dev's web page states clearly it is now $20 for all the computers you own. Seriously? $20? I would have considered paying $2 for this useful utility, but $20 is way too much. It's a good app but plenty of good alternatives out there - check out wifi explorer (my reccommendation); other apps besides these. Radar
(16)
Show comments (7)
Libertyforall1776
29 March 2013
Version: 99
iStumbler Release 100 GM Candidate 4 is out! http://istumbler.net/beta/istumbler-100gmc4a.zip http://istumbler.net/beta/index.html
(3)
Show comment (1)
Roy-Earle
18 December 2012
Version: 99
Fun and useful, but when I tried to uninstall it, it left shards in the Security and Privacy control panel under Locations that I can't figure out how to get rid of. Therefore it gets a low rating from me. 10.8.2 iMac
(2)
Show comment (1)
B-Jefferson-Le-Blanc
23 December 2011
Version: 99
OS X Lion has a built-in utility for testing WiFi networks, Wi-Fi Diagnostics Utility, which can be found in the /System/Library/CoreServices/ folder (as explained in a MacFixIt article: http://reviews.cnet.com/8301-13727_7-57346631-263/diagnosing-and-addressing-wi-fi-signal-quality-problems/).
(1)
Show comment (1)
4
Surfpunk
13 September 2011
Version: 99
I love this app, however on Lion it crashes shortly after start. Hunting around, there are betas available here... http://istumbler.net/beta/ the author is still developing this, yay! Running the latest beta and enabling bluetooth seems to cure the crashes. I look forward to a final version where active bluetooth isn't required but for now I'm happy enough!
(3)
Tookay
20 August 2011
Version: 99
After upgrading to 10.7.1, iStumbler crashes regularly on my MacBook Air, but it doesn't crash on my iMac. No crashes on either machine under the initial 10.7 Lion. Update notes for 10.7.1 does say something about improvements to WiFi, so I'm wondering if the associated changes may be affecting iStumbler?
(1)
Show comment (1)
4.5
Satcomer
13 August 2011
Version: 99
It now crashed in Lion! Will it ever get updated to work in Lion with crashing.
(0)
5
Franck-Melka
06 April 2011
Version: 99
A real great software, Swiss Knife is exactly true. Message from France.
(1)
5
Uncoy
10 March 2011
Version: 99
Works a treat. After comparing it to the rest of the commercial spyware/trojans in this category, thank goodness for iStumbler. I don't know why Apple doesn't give us info on what channels are in use but iStumbler let me pick an empty channel for use on my LinkSys WTR54GL (you have to specify the channel, there's no auto) and get online. On my way to donate right now.
(1)
outer
15 November 2010
Version: 99
Under Snow Leopard this must be run from an Administrator user account; otherwise the UI freezes shortly after launch. Bletch.
(2)
Show comments (4)
ben-marko
17 February 2010
Version: 99
Thank you dev! Been waiting for this for ages.
(1)
Davehill
16 February 2010
Version: 99
Doesn't work on Leopard. [0x0-0x2ec2ec].net.istumbler.release-99 dyld: Symbol not found: __NSConcreteStackBlock MU Page says it works on 10.3.9+ The older version 98 doesn't work properly on Leopard either. B-( Dave
(2)
Show comments (7)
Surfpunk
16 February 2010
Version: 99
Finally an update! Thought it had been abandoned - graphing was broken when Leopard came out!
(2)
howard-socal
16 February 2010
Version: 99
A big THANK YOU for the Snow Leopard update!!!
(5)
Tareed
06 December 2009
Version: 0.98
Worked nicely before, but not under 10.6. I e-mailed the author about a six weeks ago and haven't ever gotten a response.
(0)
The-X
04 October 2009
Version: 0.98
Broken with 10.6. Developer, it would be great if you could find a fix. :)
(0)
Apeman
04 September 2009
Version: 0.98
Stopped working with 10.6
(1)
5
Robertcoogan
18 February 2009
Version: 0.98
Very handy, very easy to use. Beats AirRadar hands-down. I have used it for quite a while (in conjunction with my WiFire), and it is excellent at determining the accessibility of local signals.
(2)
Nohawk
12 October 2008
Version: 0.98
Has anyone yet found the fix for the accumulation of vast numbers of error messages in /var/log/system.log apparently due to an outdated format being used in a plist file associated with iStumbler when running on a macbook (Leopard)? Thanks! macbook-pro iStumbler[14765]: exception getting radio info: XML parser error:\n Unexpected character a at line 1\nOld-style plist parser error:\n Unexpected ';' or '=' after key at line 1
(0)
Satcomer
24 February 2008
Version: 0.98
Just tried and it works on my Mac Book Pro. It even finds hidden sites.
(0)
ivanovitch
19 November 2006
Version: 0.97
Doesn't work with latest MacBook Pro (Core 2 Duo). I suspect that it needs updating to deal with new 802.11n cards that have been put in these machines.
(0)
Show comment (1)
Klktrk
19 October 2006
Version: 0.97
Love this app! Here's the obligatory feature request: Provide a way to sort by signal strength--maybe just by clicking on the signal strength column. Would also be nice if you could filter for "only open" networks. I know, I know, it's not actually signal strength, but throughput, no need to flame me.
(1)
Anonymous
26 November 2005
Version: 0.95
works fine for me. 10.4.3
(0)
Anonymous
29 August 2005
Version: 0.95
Greetings… Beige G4 600 mHz running OS 10.3.9 :-) 0.94 works without problems… 0.95 will not launch… Console provides the following: dyld: /Applications/Utilities/iStumbler 0.95.app/Contents/MacOS/iStumbler can't open library: /usr/lib/libgcc_s.1.dylib (No such file or directory, errno = 2) Do you find this helpful?
(0)
Anonymous
03 August 2005
Version: 0.95
Would not launch… PowerMac Platinum G4 533 Mac OS 10.3.9 Too many open wireless nodes in my hood to count… v 0.94 works fine :-)
(0)
Show comment (1)
5
Michael Scott
07 July 2005
Version: 0.94
Tiger 10.4.1 has caused me problems when moving form one wireless network to another, I have been unable to connect to my wireless network at home, iStumbler allowed me to connect and be up and running in seconds.
(0)
4
Anonymous
08 June 2005
Version: 0.94
under osx 10.4.1, the application icon does not appear properly in the finder. other than that, great.
(0)
4.25
Smokeonit
04 June 2005
Version: 0.93
crashes in tiger when using my bluetooth belkin gps.hopefully will get fixed in the next update?
(0)
Show comment (1)
5
Anonymous
20 April 2005
Version: 0.93
great application keep it up
(0)
3.5
Anonymous
12 April 2005
Version: 0.92
Need to force quit this version, just as was pointed out by others.
(0)
5
matt
29 March 2005
Version: 0.92
Just got V.92, have to force quit every time. Will go back to V.91 for now. Hope next update solves that problem.
(0)
Show comment (1)
Anonymous
21 March 2005
Version: 0.92
Version .92 works, but I have to force quit. Went back to version .91 and all is well.
(0)
Show comment (1)
4.5
Ryan
05 March 2005
Version: 0.91
KisMac probably has a better featureset, but iStumbler is certainly much easier to use. If you're new to wireless, start here.
(0)
Anonymous
21 February 2005
Version: 0.91
"Next (dumb?) question: "Why would anyone need wireless networking? Can't you just, like, plug it in the wall?" Please tell me this is sarcasm... right?
(0)
4.5
Anonymous
31 January 2005
Version: 0.90
Nice, effective and useful program. However, there are others that not only find networks for you but can also help you crack the encryption. Haven't tried it, but don't tell me your network is secure. It's a joke.
(0)
Show comment (1)
5
Anonymous
25 January 2005
Version: 0.90
Very useful if you want to check lots of APs at the same time, and confirm that you haven't got a channel clash or got an unprotected AP. Dell APs (IME) in particular are prone to forgetting their settings. Yes, other users, you can use it to find unprotected APs and leech, but you can use a chain saw to cut an arm off or to cut down a dangerous tree before it falls on a child and kills them. Its not the tool thats dangerous its the person using it.
(0)
Show comments (2)
Anonymous
25 January 2005
Version: 0.90
The fact that this is called iStumbler explains what this app is useful for. For stumbling onto unencrypted, insecure wireless networks that you can leech off of. I'm sure it does however have other, more peer friendly uses too. Though perhaps the developer can elighten us with those ;) Perhaps in environments where there are alot of overlapping wireless networks and you want to connect to a specific one... Maybe. I had an unwanted intruder on my network after i reset my router and forgot to secure it. Though now I'd like to see em try and free load off me... Anyway, enjoy, Moose
(0)
Show comments (4)
Anonymous
24 January 2005
Version: 0.90
Why would you need this?
(0)
Show comments (4)
Anonymous
24 January 2005
Version: 0.90
uh.. aren't all of these features built into OSX?
(0)
Anonymous
24 January 2005
Version: 0.90
No problems here, works fine.
(0)
Istumbler
07 July 2004
Version: 0.87
Upgrading users may have problems with the AirPort plugin showing no data. You can either re-download the current version (87a) or remove your iStumbler preferences file which is located in your home directory: ~/Library/Preferences/net.istumbler.plist I'm very sorry for the hassle, future version of iStumbler will have versions in the bundle id's and will not attempt to share preferences between versions.
(0)
2
Flash1296
07 July 2004
Version: 0.87
The last version worked, albeit primitively and non-intuitively; however this version displays NOTHING while the log indicates that it is at the least an active appl'.
(0)
3.75
Anonymous
07 July 2004
Version: 0.87
Checked out that nexus9.org, any site offering trojans and other malicious stuff I wouldnt even trust to put any of their stuff on my system.
(0)
Anonymous
07 July 2004
Version: 0.87
www.nexus9.org Airstumbler is better
(0)
Show comments (2)
5
Hxrly
23 April 2004
Version: 0.85
Useful, stable, simple. A must have for me.
(0)
Anonymous
23 April 2004
Version: 0.85
Just curious: what happened to the old, good looking, 3D icon? :)
(0)
Anonymous
23 April 2004
Version: 0.85
Great app, but was there really a good reason to drop 10.2.x support? There are a lot of Wallstreet G3 PBs out there, and Apple doesn't support installing 10.3 on them. And some might be prefer to avoid the upgrade cost of 10.3 anyway. Yes, I do know that some have been able to install 10.3 via XPostFacto.
(0)
Show comments (2)
Anonymous
22 November 2003
Version: 0.83
Great Little App! I'd like to see iStumbler able to work with an Orinoco card (which the SourceForge Wireless driver adds support for). Airport cards work okay, but the Orinoco has a more sensitive receive, and allows supports an external directional antenna offering vastly greater range and needed directivity to avoid closer nets on the same channel which use common default names. To stumble with the Orinoco, Kismac seems the only option. It is quite powerful (can even show clients on nets), but it loads its own driver and won't allow using other net apps while it is going.
(0)
Show comment (1)
Istumbler
22 November 2003
Version: 0.81b
" Only problem, my log would clear out by its self." That's actually a feature, if the log didn't clear itself out it would eventually fill up your swap disk. If you want iStumbler to remember more than the default 10 minutes you'll have to change it in the prefrence panel.
(0)
4.25
Bebe
21 November 2003
Version: 0.81b
nice prog - found tanother network on my office, that the Airport software didn't see. I hoped to see my own network, even with the SSID hidden... there should be an option to add hidden as well, I don't want to open my connection just so I can see it in here.
(0)
Show comment (1)
5
Anonymous
05 August 2003
Version: 0.81b
Yes.. a very nice little app. I'm using AirPort Extreme BTW. I'm looking forward for the next GPS version.
(0)
4.75
Anonymous
18 July 2003
Version: 0.8b
Good prog. Better than Macstumbler as you can set frequency on scanning. Only problem, my log would clear out by its self.
(0)
4
Smeagle
08 June 2003
Version: 0.6b
iStumbler 0.5b was been good and stable and is actively updated, unlike MacStumbler:( The display is small and inconspicuous, big pluses for certain applications ;) Not so great if you're setting up your own wireless network
(0)
$14.99

4.3

App requirements: 
  • Intel 64
  • OS X 10.10.3 or later
License: 
PaidOne-Time Purchase

Downloaded & Installed 185,044 times

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